Hi, I want to be able to freeze and unfreeze the display from one of the output from a dual screen graphics card while the other is live. How can i do that? I cannot find anything on the options, preferences etc.

You'll need a screen capture program. "So won’t you give this man his wings What a shame To have to beg you to see We’re not all the same What a shame" - Shinedown

No i think you've misunderstood, or maybe i have. Basically, i have a computer with dual screen graphics card. One output is to a lcd screen which only i will see, the other is to a projector which the audience will see. Now say if i wanted to make changes to a presentation i was showing the audience, but didn't want to show them what i was doing. I'd freeze the projector using a shortcut key or something, make the changes on the pc with the aid of the lcd screen while everyone else is seeing the screen i froze, then unfreeze it. I know i can freeze the projector, but that doesn't work for me, so i was hoping if i can freeze one of the outputs of the graphics card (in this case the DVI), it would work wonders for me. Thank you.

well if your talking powerpoint im not to sure, however i know with video programs, i can make my second screen the output, so i only see what i want them to see,o therwise its black, or simply if it is powerpoint, put a book in front of the project? or on my lcd theirs a freeze button....